【摘要】 提出了同步边缘特性检测的轮廓跟踪算法，并基于规则从扫描图像全图轮廓中分离字符轮廓；在此基础上，针对机械工程图，采用全方位的邻域搜索技术生成不同方向的字符串，通过分类树进行识别，并根据专业领域知识进行校正．实验测试表明，该方法具有较好的效果更多还原

【Abstract】 A contour tracking algorithm with simultaneous edge feature detection is proposed and the character contour is separated from the complete graph contour of the scanned image based on rules. For mechanical engineering drawings, the all round neighborhood search method is used to generate the text strings in any orientation. The text strings generated are recognized by a classification tree and corrected with specialized knowledge. Test results show that satisfactory results are given by the method.更多还原